CVE WatchJul 9, 2026

CVE-2021-41653

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution

CVSS

9.8

Critical

EPSS

75.9%

p99

KEV

—

Exploit Today

0-100

Published: Nov 13, 2021 · Last modified: Jul 9, 2026 · CWE-94

EPSS · 30d

75.9%EPSS · 30 days77.5%

2026-06-302026-07-16

Technical description

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.

Official references

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